POHON PEMANTAUAN DAN HEBAHAN KEPADA RAKAN-RAKAN SEKALIAN.
KERETA PROTON WIRA HITAM METALIK NO PENDAFTARAN PFL 9833 KEPUNYAAN 9W2LHK PAKLAN TELAH HILANG KOTA BHARU KELANTAN. HARAP RAKAN-RAKAN YANG MENJUMPAI ATAU TERLIHAT KERETA BERKENAAN BOLEH MENHUBUNGI 9W2LHK-PAKLAN DI TALIAN 0195449766
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Ucapan Jutaan Terima Kasih dari 9W2LHK dan rakan2 Hams Kepala Batas atas bantuan yang disalurkan kepada 9W2LHK-PakLan. Jasa dan pergorbanan anda semua amat kami hargai.. terutama :
9W2DJM-PAK DIN JAGUT MERAH
9W2SYF-PAK SABRI
9W2YKB-PAK SOB
Semua Rakan2 Radio Amatur Kelantan dan juga KELAB.
73'
Friday, April 1, 2011
Wednesday, March 30, 2011
Astra Kali ke-14
~Perubahan Tempat AGM~
Tempat Baru : Hotel Putra Place Kangar, Perlis.
Masa dan Tarrikh tidak berubah.
Thursday, March 24, 2011
Active Filter part 1
Post kali ni saja nk citer pasal tajuk kat atas. rasa da kena kot ngan amatur nih.. hihi
Introduction
Filters are circuits that are capable of passing signals within a band of frequencies while rejecting or blocking signals of frequencies outside this band. This property of filters is also called “frequency selectivity”.
Filter can be passive or active filter.
Passive filters: The circuits built using RC, RL, or RLC circuits.
Active filters : The circuits that employ one or more op-amps in the design an addition to resistors and capacitors
Advantages of Active Filters over Passive Filters
-Active filters can be designed to provide required gain, and hence no attenuation as in the case of passive filters
-No loading problem, because of high input resistance and low output resistance of op-amp.
-Active Filters are cost effective as a wide variety of economical op-amps are available.
Applications
-Active filters are mainly used in communication and signal processing circuits.
-They are also employed in a wide range of applications such as entertainment, medical electronics, etc.
Active Filters
There are 4 basic categories of active filters:
1. Low-pass filters
2. High-pass filters
3. Band-pass filters
4. Band-reject filters
Each of these filters can be built by using op-amp as the active element combined with RC, RL or RLC circuit as the passive elements.
Rasa cukup kot sampai kt sini.. nnti kita sambung lagi.... k.
entry akan datang akan bercerita tentang 4 basic categories of active filter..
Introduction
Filters are circuits that are capable of passing signals within a band of frequencies while rejecting or blocking signals of frequencies outside this band. This property of filters is also called “frequency selectivity”.
Filter can be passive or active filter.
Passive filters: The circuits built using RC, RL, or RLC circuits.
Active filters : The circuits that employ one or more op-amps in the design an addition to resistors and capacitors
Advantages of Active Filters over Passive Filters
-Active filters can be designed to provide required gain, and hence no attenuation as in the case of passive filters
-No loading problem, because of high input resistance and low output resistance of op-amp.
-Active Filters are cost effective as a wide variety of economical op-amps are available.
Applications
-Active filters are mainly used in communication and signal processing circuits.
-They are also employed in a wide range of applications such as entertainment, medical electronics, etc.
Active Filters
There are 4 basic categories of active filters:
1. Low-pass filters
2. High-pass filters
3. Band-pass filters
4. Band-reject filters
Each of these filters can be built by using op-amp as the active element combined with RC, RL or RLC circuit as the passive elements.
Rasa cukup kot sampai kt sini.. nnti kita sambung lagi.... k.
entry akan datang akan bercerita tentang 4 basic categories of active filter..
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